US 4,224,939 AGranted

Bacteria-tight system for artificial respiration

OwnerVolker Langinventor

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Abstract

An appliance for establishing a bacteriologically safe connection between a respirator and an endotracheal tube comprises a head fitting, which is adapted to be mounted on the endotracheal tube. A flexible tube for supplying inhalable gas and a flexible withdrawing tube for withdrawing exhaled air are connected to said head fitting. An exhalation valve is incorporated in the withdrawing tube and is incorporated by a controller in step with the artificial respiration. An inflatable bag, which is manually operable to effect artificial respiration, is connected by a tee fitting to the supply tube, which is connected by a bacteria filter and the controller to the respirator. The inflatable bag is provided with a sensor, which is connected by a signal line to the controller and causes the latter to close and open the exhalation valve in step with the manually effected artificial respiration.

Claims11

Dependent claims

An appliance for establishing a bacteriologically safe connection between a respirator used in artificial respiration and an endotracheal tube, comprising a head fitting adapted to be mounted on the endotrachael tube;

flexible supply tube means for supplying inhalable gas;
flexible withdrawing tube means for withdrawing exhaled air, said tube means being connected to said head fitting;
and exhalation valve incorporated in the withdrawing tube means;
an inflatable bag manually operable to effect artificial respiration;
a controller in step with the artificial respiration for controlling said exhalation valve;
a tee fitting for connecting said inflatable bag to the supply tube means;
a bacteria filter positioned in said supply tube means, said controller connecting said supply tube means to the respirator, the inflatable bag being provided with a sensor;
first signal means for connecting the sensor to the connector;
and second signal means for connecting the controller to the exhalation valve so that said controller closes and opens the exhalation valve in step with pressure changes resulting from the manually effected artificial respiration.

6 more elements

Dependencies are inferred from the claim text.